Add API Changelog for Cloud Firewall release

Author: leslitagordita

src/content/changelog/4-75-0-2020-09-14-2020.md

@@ -0,0 +1,29 @@
+---
+title: '4.75.0: 2020-09-14'
+date: 2020-09-14T04:00:00.000Z
+version: 4.75.0
+changelog:
+  - API
+---
+
+### Added
+
+[Linode Cloud Firewall](https://www.linode.com/products/firewall/) is now available in the Sydney data center as part our [Linode Green Light Beta Program](https://www.linode.com/green-light/). Cloud Firewall is a free service used to create, configure, and add stateful network-based firewalls to Linode services using the Linode Cloud Manager and the Linode APIv4. A Cloud Firewall is independent of the service it is attached to, so you can apply a single Firewall to multiple Linode services. Currently, a Cloud Firewall can only be applied to [Linode instances](/api/v4/linode-instances/#post).
+
+* Cloud Firewall beta endpoints have been added to the Networking collection. **Note**: These endpoints are prepended with **`/v4beta`** instead of `/v4`.
+
+    * List Firewalls ([GET /networking/firewalls](/api/v4/networking-firewalls))
+    * Create Firewall ([POST /networking/firewalls](/api/v4/networking-firewalls/#post))
+    * View Firewall ([GET /networking/firewalls/{firewallId}](/api/v4/networking-firewalls-firewall-id))
+    * Update Firewall ([PUT /networking/firewalls/{firewallId}](/api/v4/networking-firewalls-firewall-id/#put))
+    * Delete Firewall ([DELETE /networking/firewalls/{firewallId}
+](/api/v4/networking-firewalls-firewall-id/#delete))
+    * List Firewall Devices ([GET /networking/firewalls/{firewallId}/devices](/api/v4/networking-firewalls-firewall-id-devices))
+    * Create Firewall Device ([POST /networking/firewalls/{firewallId}/devices](/api/v4/networking-firewalls-firewall-id-devices/#post))
+    * View Firewall Device ([GET /networking/firewalls/{firewallId}/devices/{deviceId}](/api/v4/networking-firewalls-firewall-id-devices-device-id))
+    * Delete Firewall Device ([DELETE /networking/firewalls/{firewallId}/devices/{deviceId}](/api/v4/networking-firewalls-firewall-id-devices-device-id/#delete))
+    * List Firewall Rules ([GET /networking/firewalls/{firewallId}/rules](/api/v4/networking-firewalls-firewall-id-rules))
+    * Update Firewall Rules ([PUT /networking/firewalls/{firewallId}/rules](/api/v4/networking-firewalls-firewall-id-rules/#put))
+
+
+